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diff --git a/Source/WebKit/chromium/public/WebWidgetClient.h b/Source/WebKit/chromium/public/WebWidgetClient.h
deleted file mode 100644
index 89457ce38..000000000
--- a/Source/WebKit/chromium/public/WebWidgetClient.h
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * Copyright (C) 2009 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef WebWidgetClient_h
-#define WebWidgetClient_h
-
-#include "WebNavigationPolicy.h"
-#include "WebScreenInfo.h"
-#include "platform/WebCommon.h"
-#include "platform/WebRect.h"
-
-namespace WebKit {
-
-class WebString;
-class WebWidget;
-struct WebCursorInfo;
-struct WebSize;
-
-class WebWidgetClient {
-public:
-    // Called when a region of the WebWidget needs to be re-painted.
-    virtual void didInvalidateRect(const WebRect&) { }
-
-    // Called when a region of the WebWidget, given by clipRect, should be
-    // scrolled by the specified dx and dy amounts.
-    virtual void didScrollRect(int dx, int dy, const WebRect& clipRect) { }
-
-    // Called when the Widget has changed size as a result of an auto-resize.
-    virtual void didAutoResize(const WebSize& newSize) { }
-
-    // Called when the compositor is enabled or disabled.
-    // The inputHandlerIdentifier can be used on the compositor thread to get access
-    // to the WebCompositorInputHandler instance associated with this WebWidget.
-    // If there is no WebCompositorInputHandler associated with this WebWidget (for example if
-    // threaded compositing is not enabled) then calling WebCompositorInputHandler::fromIdentifier()
-    // for the specified identifier will return 0.
-    virtual void didActivateCompositor(int inputHandlerIdentifier) { }
-    virtual void didDeactivateCompositor() { }
-
-    // Indicates to the embedder that the compositor is about to begin a
-    // frame. This is primarily to signal to flow control mechanisms that a
-    // frame is beginning, not to perform actual painting work.
-    virtual void willBeginCompositorFrame() { }
-
-    // Indicates to the embedder that the WebWidget is ready for additional
-    // input.
-    virtual void didBecomeReadyForAdditionalInput() { }
-
-    // Called for compositing mode when the draw commands for a WebKit-side
-    // frame have been issued.
-    virtual void didCommitAndDrawCompositorFrame() { }
-
-    // Called for compositing mode when swapbuffers has been posted in the GPU
-    // process.
-    virtual void didCompleteSwapBuffers() { }
-
-    // Called when a call to WebWidget::composite is required
-    virtual void scheduleComposite() { }
-
-    // Called when a call to WebWidget::animate is required
-    virtual void scheduleAnimation() { }
-
-    // Called when the widget acquires or loses focus, respectively.
-    virtual void didFocus() { }
-    virtual void didBlur() { }
-
-    // Called when the cursor for the widget changes.
-    virtual void didChangeCursor(const WebCursorInfo&) { }
-
-    // Called when the widget should be closed.  WebWidget::close() should
-    // be called asynchronously as a result of this notification.
-    virtual void closeWidgetSoon() { }
-
-    // Called to show the widget according to the given policy.
-    virtual void show(WebNavigationPolicy) { }
-
-    // Called to block execution of the current thread until the widget is
-    // closed.
-    virtual void runModal() { }
-
-    // Called to enter/exit fullscreen mode. If enterFullScreen returns true,
-    // then WebWidget::{will,Did}EnterFullScreen should bound resizing the
-    // WebWidget into fullscreen mode. Similarly, when exitFullScreen is
-    // called, WebWidget::{will,Did}ExitFullScreen should bound resizing the
-    // WebWidget out of fullscreen mode.
-    virtual bool enterFullScreen() { return false; }
-    virtual void exitFullScreen() { }
-
-    // Called to get/set the position of the widget in screen coordinates.
-    virtual WebRect windowRect() { return WebRect(); }
-    virtual void setWindowRect(const WebRect&) { }
-
-    // Called when a tooltip should be shown at the current cursor position.
-    virtual void setToolTipText(const WebString&, WebTextDirection hint) { }
-
-    // Called to get the position of the resizer rect in window coordinates.
-    virtual WebRect windowResizerRect() { return WebRect(); }
-
-    // Called to get the position of the root window containing the widget
-    // in screen coordinates.
-    virtual WebRect rootWindowRect() { return WebRect(); }
-
-    // Called to query information about the screen where this widget is
-    // displayed.
-    virtual WebScreenInfo screenInfo() { return WebScreenInfo(); }
-
-    // Called to get the scale factor of the display.
-    virtual float deviceScaleFactor() { return 1; }
-
-    // When this method gets called, WebWidgetClient implementation should
-    // reset the input method by cancelling any ongoing composition.
-    virtual void resetInputMethod() { }
-
-    // Requests to lock the mouse cursor. If true is returned, the success
-    // result will be asynchronously returned via a single call to
-    // WebWidget::didAcquirePointerLock() or
-    // WebWidget::didNotAcquirePointerLock().
-    // If false, the request has been denied synchronously.
-    virtual bool requestPointerLock() { return false; }
-
-    // Cause the pointer lock to be released. This may be called at any time,
-    // including when a lock is pending but not yet acquired.
-    // WebWidget::didLosePointerLock() is called when unlock is complete.
-    virtual void requestPointerUnlock() { }
-
-    // Returns true iff the pointer is locked to this widget.
-    virtual bool isPointerLocked() { return false; }
-
-protected:
-    ~WebWidgetClient() { }
-};
-
-} // namespace WebKit
-
-#endif